2. Signaling Pathways
  3. Cytoskeleton
  4. Myosin

Myosin

Myosin

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Myosins are mechanoenzymes that interact with actin filaments and hydrolyse ATP to generate movement and force. This enables myosins to propel the sliding of actin filaments, to produce tension on actin filaments and to walk along these filaments. As a result, myosins can regulate the structure and dynamics of the actin cytoskeleton and affect the localization and transport of cellular components. The different myosins are grouped into classes on the basis of their motor domains. There are 35 known classes of myosin, and humans have 40 myosin genes that fall into 13 classes (I, II, III, V, VI, VII, IX, X, XV, XVI, XVIII, XIX and XXXV).

Myosins are actin-dependent motors that participate in a diverse range of crucial activities, including muscle contraction, intracellular trafficking, cell division, motility, actin cytoskeletal organisation and cell signaling. Myosin malfunction has been implicated in a variety of disorders including deafness, hypertrophic cardiomyopathy, Usher syndrome, Griscelli syndrome and cancer.

Myosin light chain kinase (MLCK) is an enzyme that activates the myosin light chain to exert its function related to cytoskeleton contraction and tight junction regulation. In most cells, MLCK is a transducer for signalling MLC phosphorylation in response to Ca2+ binding to MLCK-associated calmodulin. MLCK-mediated MLC phosphorylation and actomyosin contractility is important in muscle contraction, cell migration, and endo/exocytic processes, and is recognized for its central role in signalling endothelial cell-cell adhesion and barrier function.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-100948B
    ATM-3507 trihydrochloride
    		Inhibitor
    ATM-3507 trihydrochloride is a potent tropomyosin inhibitor with IC50s from 3.83-6.84 μM in human melanoma cell lines.
    ATM-3507 trihydrochloride
  • HY-152949
    Myosin V-IN-1
    		Inhibitor
    Myosin V-IN-1 (compound 8) is a potent and selective Myosin V inhibitor, with a Ki of 6 μM. Myosin V-IN-1 shows acute inhibition of myosin V. Myosin V-IN-1 slows the actin-activated myosin V ATPase by specifically inhibiting ADP release from the actomyosin complex.
    Myosin V-IN-1
  • HY-152205
    JB061
    		Inhibitor 99.27%
    JB061 is a nonmuscle myosin inhibitor with IC50s of 4.4 μM (Cardiac muscle myosin), 9.1 μM (Skeletal muscle myosin), and >100 μM (Smooth muscle myosin II), respectively. JB061 poorly decreases ATPase activity (IC50>200 μM). JB061 shows cytotoxicity against COS-7 cells with an IC50 value of 39 μM.
    JB061
  • HY-P3965
    16-38-Thymosin β4 (cattle)
    		Activator 98.14%
    16-38-Thymosin β4 (cattle) is a Ca2+-independent MLCK activator with high affinity.
    16-38-Thymosin β4 (cattle)
  • HY-P3965A
    16-38-Thymosin β4 (cattle) (TFA)
    		Activator 98.14%
    16-38-Thymosin β4 (cattle) TFA is a Ca2+-independent MLCK activator with high affinity.
    16-38-Thymosin β4 (cattle) (TFA)
  • HY-100932A
    ML-9 Free Base
    		Inhibitor
    ML-9 (Free Base) is a selective and potent inhibitor of Akt kinase, inhibits myosin light-chain kinase (MLCK) and stromal interaction molecule 1 (STIM1) activity. ML-9 (Free Base) inhibits inhibits MLCK, PKA and PKC activity with Ki values of 4, 32 and 54 μM, respectively. ML-9 (Free Base) induces autophagy by stimulating autophagosome formation and inhibiting their degradation.
    ML-9 Free Base
  • HY-152206
    JB062
    		Inhibitor
    JB062 is a nonmuscle myosin inhibitor with IC50 values of 1.6, 5.4, and >100 μM for Skeletal muscle myosin, Cardiac muscle myosin, and Smooth muscle myosin II, respectively. JB062 has cytotoxic to human cancer cells but not normal cells. JB062 can be used in research of muscle spasticity, chronic musculoskeletal pain, and hypertrophic cardiomyopathy.
    JB062
  • HY-P2162
    Kemptamide
    Kemptamide, a 13 amino acid fragment with a sequence corresponding to residues 11-23 of gizzard light chain. Kemptamide is a peptide substrate of myosin light-chain kinase (MLCK).
    Kemptamide
  • HY-152190
    JB002
    		Inhibitor 99.32%
    JB002 is a myosin II inhibitor, with an IC50 of ≤10 μM. JB002 can be used for the research of muscle spasticity, chronic musculoskeletal pain, and hypertrophic cardiomyopathy.
    JB002
  • HY-141810
    MT-134
    		Inhibitor
    MT-134 is a SkMII-specific inhibitor and has excellent exposure in muscles.
    MT-134
  • HY-100984A
    HA-100 hydrochloride
    		Inhibitor
    HA-100 hydrochloride is a potent protein kinase inhibitor, with IC50s of 4 μM, 8 μM, 12 μM and 240 μM for cGMP-dependent protein kinase (PKG), cAMP-dependent protein kinase (PKA), protein kinase C (PKC) and MLC-kinase, respectively. HA-100 hydrochloride also used as a ROCK inhibitor.
    HA-100 hydrochloride
  • HY-12880
    HA-100 dihydrochloride
    		Inhibitor
    HA-100 dihydrochloride is a potent protein kinase inhibitor, with IC50s of 4 μM, 8 μM, 12 μM and 240 μM for cGMP-dependent protein kinase (PKG), cAMP-dependent protein kinase (PKA), protein kinase C (PKC) and MLC-kinase, respectively. HA-100 dihydrochloride also used as a ROCK inhibitor.
    HA-100 dihydrochloride
  • HY-111474
    Para-aminoblebbistatin
    		Inhibitor 99.90%
    Para-aminoblebbistatin is a highly water soluble, non-fluorescent and photostable C15 amino-substituted derivative of blebbistatin; inhibits various (myosin II) isoforms both in vitro and in vivo.
    Para-aminoblebbistatin
  • HY-14233S
    Omecamtiv mecarbil-d8
    		Activator
    Omecamtiv mecarbil-d8 is the deuterium labeled Omecamtiv mecarbil. Omecamtiv mecarbil (CK-1827452) is a selective cardiac myosin activator.
    Omecamtiv mecarbil-d<sub>8</sub>
  • HY-109037S
    Mavacamten-d6
    		Modulator
    Mavacamten-d6 (MYK461-d6; SAR439152-d6) is deuterium labeled Mavacamten (HY-109037). Mavacamten (MYK461) is an orally active modulator of cardiac myosin, with IC50s of 490, 711 nM for bovine cardiac and human cardiac, respectively.
    Mavacamten-d<sub>6</sub>
  • HY-109037S2
    Mavacamten-d1
    		Modulator
    Mavacamten-d1 (MYK461-d1; SAR439152-d1) is deuterium labeled Mavacamten (HY-109037). Mavacamten (MYK461) is an orally active modulator of cardiac myosin, with IC50s of 490, 711 nM for bovine cardiac and human cardiac, respectively.
    Mavacamten-d<sub>1</sub>
  • HY-163120
    Myosin-IN-1
    		Inhibitor
    Myosin-IN-1 (compound F10) is a Myosin inhibitor that specifically targets cardiac myosin. Myosin-IN-1 stabilizes the biochemical and structural closed state of the cardiac myosin motor domain and reduces myocardial force production and calcium sensitivity in vitro. Myosin-IN-1 acts as a negative inotropic agent in isolated Langendroff-perfused rat hearts, reducing stress in isolated myofilaments and left ventricular pressure development. Myosin-IN-1 can be used in heart failure research.
    Myosin-IN-1
  • HY-P5998
    Myosin Light Chain Kinase Substrate (smooth muscle)
    Myosin Light Chain Kinase Substrate (smooth muscle) is a smooth muscle myosin light chain kinase (MLCK) synthetic peptide substrate.
    Myosin Light Chain Kinase Substrate (smooth muscle)
Cat. No. Product Name / Synonyms Application Reactivity